The whole error message is The phone you are trying to call is not reachable PPS6180 and it's a Cingular / AT&T error messageThe whole error message is The phone you are trying to call is not reachable PPS6180 and it's a Cingular / AT&T error message

Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

This is an message from some cell phone providers that lets the caller know that the number they are trying to reach is either out of service range (in an area without coverage), disconnected, or temporarily unreachable for another reason such as being out of prepaid minutes.

In this case, the person trying to call you is receiving this message because you likely ran out of money on your prepaid account. Until you refill it, the number will continue to be "not reachable". As soon as you refill your account, then your call will go through and they will be able to reach you. If you do have funds on your account then I would reach out to the Phone Provider or Carrier and see why they would be limiting your service.

You have enable the feature called "Fixed Dial List". You need your PIN2 to enable or disable this feature. Using this feature will restrict your calls or text messages only to numbers in the list.
Navigate to your phone security menu, and disable fixed dial list.
Regards,
dC